The rest of the options don’t matter. It’s safe to leave them unchecked.

From the “Command Window” menu, select “Load File...” and find the .syx file you downloaded in step 1.

Now MIDI-OX is ready, but we have to get the Bend Matrix ready before we can do the upgrade. Unplug the Bend Matrix, and hold down CLEAR while you plug it back in. The display should read three dashes, and the sequence buttons will be lit up in a pattern. Now everything’s ready!

Go back to MIDI-OX and select “Send/Receive Sysex” from the “Command Window” menu.

The Bend Matrix display should animate, and the button matrix will fill up as the code is transferred. It takes a minute or two, so be patient.

When it’s done, all the buttons on the Bend Matrix will be lit, and MIDI-OX will say something like “1426 bytes received”.